Alert archive / Alabama / Mesoscale Discussions in 2003

Mesoscale Discussion 1566

July 1, 20034 states

The Storm Prediction Center issued this mesoscale discussion at Jul 1, 2003, 4:26 AM CDT for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jul 1, 2003, 4:26 AM CDT (09:26 UTC)
Expired
Jul 1, 2003, 6:30 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 75 counties

Autauga County, AL, Baldwin County, AL, Barbour County, AL, Bibb County, AL, Bullock County, AL, Butler County, AL, Calhoun County, AL, Chambers County, AL, Chilton County, AL, Choctaw County, AL, Clarke County, AL, Clay County, AL, Cleburne County, AL, Coffee County, AL, Conecuh County, AL, Coosa County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Dallas County, AL, Elmore County, AL, Escambia County, AL, Geneva County, AL, Greene County, AL, Hale County, AL, Henry County, AL, Houston County, AL, Jefferson County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Marengo County, AL, Monroe County, AL, Montgomery County, AL, Perry County, AL, Pickens County, AL, Pike County, AL, Randolph County, AL, Russell County, AL, Shelby County, AL, St. Clair County, AL, Sumter County, AL, Talladega County, AL, Tallapoosa County, AL, Tuscaloosa County, AL, Washington County, AL, Wilcox County, AL, Escambia County, FL, Holmes County, FL, Okaloosa County, FL, Santa Rosa County, FL, Baker County, GA, Calhoun County, GA, Carroll County, GA, Chattahoochee County, GA, Clay County, GA, Coweta County, GA, Early County, GA, Haralson County, GA, Harris County, GA, Heard County, GA, Marion County, GA, Meriwether County, GA, Miller County, GA, Mitchell County, GA, Muscogee County, GA, Paulding County, GA, Polk County, GA, Quitman County, GA, Randolph County, GA, Stewart County, GA, Terrell County, GA, Troup County, GA, Webster County, GA, Noxubee County, MS

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 9.4 hours before the alert went out and 146 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2003-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 158 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 00:00Z on 2003-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
158 J/kg
Mixed-layer CIN
-85 J/kg
Mixed-layer LCL
1001 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
56 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 30, 7:22 PM CDTMesoscale DiscussionSPCCoffee, Covington, Dale, Geneva, Henry, Houston and 1 more113 min
Jun 30, 9:40 PM CDTTornado WatchSPCBaldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 5 more5 hr
Jul 1, 1:25 AM CDTTornado WatchSPCAutauga, Baldwin, Barbour, Bibb, Bullock, Butler and 41 more9 hr
Jul 1, 7:28 AM CDTMesoscale DiscussionSPCBarbour, Bullock, Calhoun, Chambers, Clay, Cleburne and 15 more62 min
Jul 1, 9:40 AM CDTTornado WatchSPCBarbour, Bullock, Calhoun, Chambers, Clay, Cleburne and 16 more6 hr
Jul 1, 12:57 PM CDTMesoscale DiscussionSPCBarbour, Bullock, Chambers, Henry, Lee, Macon and 3 more2 hr
Jul 1, 2:49 PM CDTMesoscale DiscussionSPCBarbour, Chambers, Cleburne, Henry, Houston, Lee and 2 more116 min
Jul 1, 3:05 PM CDTTornado WatchSPCBay, Calhoun, Columbia, Gadsden, Hamilton, Jackson and 6 more6 hr
Jul 1, 4:26 PM CDTMesoscale DiscussionSPCBryan, Chatham, Effingham, Liberty94 min
Jul 1, 5:00 PM CDTTornado WatchSPCBryan, Bulloch, Burke, Candler, Chatham, Columbia and 21 more4 hr

Nearby

Mesoscale Discussions in Alabama, 2003Mesoscale Discussions in Georgia, 2003Mesoscale Discussions in Florida, 2003Every mesoscale discussion in 2003

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.